Idle is not steady...Why?
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Member
Joined: Jan 2003
Posts: 144
Likes: 0
From: Louisville, Kentucky
Car: 1991 Camaro Z28
Engine: TPI 350
Transmission: 700R-4
Idle is not steady...Why?
My idle is at 800 rpm and it goes up to 900 rpm. It goes up and down all the time. Is there any way to fix this?
Joined: Aug 1999
Posts: 858
Likes: 6
From: Elkton MD, USA
Car: 1985 Camaro Z28, VIN F
Engine: 427 sbc, HSR
Transmission: T-56, self rebuilt 700+ hp
Axle/Gears: Moser 12bolt, 3.42 trutrac
Guessing here, but try:
Cleaning the Throttle-body/IAC passages
Readjusting IAC/TPS
Checking all vacuum lines for leaks
If you have a MAF, try tapping on
it when idling to see if it gets bad/better.
Put an ALDL scanner on it and see what
sensor readings you have and report back.
mike
Cleaning the Throttle-body/IAC passages
Readjusting IAC/TPS
Checking all vacuum lines for leaks
If you have a MAF, try tapping on
it when idling to see if it gets bad/better.
Put an ALDL scanner on it and see what
sensor readings you have and report back.
mike
Supreme Member
Joined: Jul 1999
Posts: 2,149
Likes: 4
From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
85MikeTPI did his ususal best in answering your question. I would first look for a vacuum leak. Since your engine last idled smoothly, what have you done??
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